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All results from a given calculation for CH3MgBr (Methyl Magnesium Bromide)

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-253.439479
Energy at 298.15K 
HF Energy-253.439479
Nuclear repulsion energy60.666593
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3024 2907 32.07 128.19 0.00 0.00
2 A1 1228 1180 1.74 110.28 0.14 0.24
3 A1 605 581 43.29 18.72 0.13 0.23
4 A1 277 266 18.24 24.84 0.21 0.35
5 E 3124 3004 19.98 124.13 0.75 0.86
5 E 3124 3004 19.98 124.12 0.75 0.86
6 E 1483 1426 3.28 4.55 0.75 0.86
6 E 1483 1426 3.28 4.55 0.75 0.86
7 E 666 641 100.32 2.55 0.75 0.86
7 E 666 641 100.33 2.55 0.75 0.86
8 E 103 99 26.28 0.07 0.75 0.86
8 E 103 99 26.28 0.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7942.8 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 7635.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/SDD
ABC
5.28191 0.05267 0.05267

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.228
Mg2 0.000 0.000 -1.161
Br3 0.000 0.000 1.262
H4 0.000 1.027 -3.619
H5 0.890 -0.514 -3.619
H6 -0.890 -0.514 -3.619

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06754.48981.09921.09921.0992
Mg22.06752.42232.66412.66412.6641
Br34.48982.42234.98734.98734.9873
H41.09922.66414.98731.77961.7796
H51.09922.66414.98731.77961.7796
H61.09922.66414.98731.77961.7796

picture of Methyl Magnesium Bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Mg2 Br3 180.000 Mg2 C1 H4 110.815
Mg2 C1 H5 110.815 Mg2 C1 H6 110.815
H4 C1 H5 108.094 H4 C1 H6 108.094
H5 C1 H6 108.094
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.127      
2 Mg 0.839      
3 Br -0.436      
4 H 0.241      
5 H 0.241      
6 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.265 3.265
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.574 0.000 0.000
y 0.000 -31.574 0.000
z 0.000 0.000 -40.911
Traceless
 xyz
x 4.669 0.000 0.000
y 0.000 4.669 0.000
z 0.000 0.000 -9.337
Polar
3z2-r2-18.675
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.332 0.000 0.000
y 0.000 5.332 0.000
z 0.000 0.000 11.970


<r2> (average value of r2) Å2
<r2> 153.954
(<r2>)1/2 12.408